For every 5 pieces of candy you received from trick or treating, you receive 2 pieces of gum. if you counted 28 pieces of gum in your treat bag, how many pieces of candy do u have? ?

For 28 pieces of gum you have 70 pieces of candies.

Step-by-step explanation:

5 piece of candy  gives   2 pieces of gum

So, the Ratio of Candy  :   Gum =   5 : 2

Now, the number of gums received = 28

Let the number of candy received = m

⇒ 5 : 2  = m  :  28

By, the RATIO OF PROPORTIONALITY:

or,

⇒  m = 70

Hence, for 28 pieces of gum you have 70 pieces of candies.

people went from manufacturing one object at a time by hand to manufacturing many objects in factories